Finding the Fourth Proportional to 48,049.72, 72,064.56 and 12,981.16

Step by Step Solution

1. Step 1: Write the proportion equation
   48,049.72 : 72,064.56 = 12,981.16 : x
2. Step 2: Convert to fraction form
   48,049.72/72,064.56 = 12,981.16/x
3. Step 3: Cross multiply
   48,049.72x = 72,064.56 × 12,981.16
4. Step 4: Simplify right side
   48,049.72x = 935,481,583.69
5. Step 5: Solve for x
   x = 935,481,583.69/48,049.72
6. Step 6: Final answer
   x = 19,469.03